CN220227101U - Pressurization suction device - Google Patents

Abstract

The utility model relates to the technical field of outdoor equipment. The purpose is to provide a pressurizing suction device, which comprises an outer cylinder, a central cylinder and a driving rod; the driving rod passes through a first central hole formed in the top of the central cylinder and forms vertical sliding fit with the central cylinder, and locking or unlocking can be formed between the driving rod and the central cylinder through a first locking assembly; the central cylinder passes through a second central hole formed in the top of the outer cylinder and is in vertical sliding fit with the outer cylinder, and locking or unlocking can be formed between the central cylinder and the outer cylinder through a second locking assembly. The utility model can simultaneously have the functions of inflating, pressurizing, exhausting and depressurizing, and can be widely applied to occasions where pressurizing and pumping are needed.

Description

Pressurization suction device

Technical Field

The utility model relates to the technical field of outdoor equipment, in particular to an outdoor water tank.

Background

The outdoor water tank is a tank body for containing water outdoors as the name implies, is mainly applied to occasions such as outdoor exercises, camping and the like, and can be widely applied to scenes such as field rescue, field survival, emergency disaster relief and the like. Currently, a water tank sold in the market is usually a plastic tank (similar to daily barreled water), and a water inlet is arranged on the tank and used for supplementing water into the tank; a water outlet is arranged at a position of the box body close to the lower part and is matched with a tap switch for discharging water; however, the practical application shows that the outdoor water tank has single function, can only meet basic containing requirements, and has no water purifying capability. And in many outdoor situations, such as: under the conditions of field rescue, emergency disaster relief and the like; when outdoor water taking is carried out, the cleaning of a water source cannot be completely guaranteed, for example: the demands for water purification at this time are urgent for water sources such as streams, rivers, mountain springs and the like; meanwhile, the outdoor water tank in the prior art adopts a hard plastic tank body, so that the outdoor water tank is inconvenient to carry and store if the volume of the outdoor water tank is too large; the volume is too small, the water containing amount is too low, and the meaning of the outdoor water tank is lost; in addition, when water taking is performed outdoors and water purification is completed, if water filtering completely depends on natural filtering, the problem that the filtering time is long exists, and water use is not facilitated, so how to improve the efficiency of water taking and filtering is also an important problem of an outdoor water tank.

Disclosure of Invention

The utility model aims to provide a pressurizing and sucking device with functions of sucking and pressurizing.

In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: a pressurizing and sucking device comprises an outer cylinder, a central cylinder and a driving rod;

the driving rod passes through a first central hole formed in the top of the central cylinder and forms vertical sliding fit with the central cylinder, and locking or unlocking can be formed between the driving rod and the central cylinder through a first locking assembly; the central cylinder penetrates through a second central hole formed in the top of the outer cylinder and is in vertical sliding fit with the outer cylinder, and locking or unlocking can be formed between the central cylinder and the outer cylinder through a second locking assembly;

the outer side wall of the driving rod is fixedly provided with a funnel-shaped inner movable valve with a downward opening, and the inner movable valve is matched with the inner cavity of the central cylinder; the outer side wall of the central cylinder is fixedly provided with a funnel-shaped outer movable valve with an upward opening, and the outer movable valve is matched with the inner cavity of the outer cylinder;

the upper ends of the central cylinder and the outer cylinder are respectively provided with an upper air hole communicated with the outside, and the lower ends of the central cylinder and the outer cylinder are respectively provided with a lower air hole communicated with the inside of the container; when the driving rod is in a locking state, the gas path corresponding to the central cylinder is closed; when the central cylinder is in a locking state, the air passage corresponding to the outer cylinder is closed.

Preferably, the lower ends of the central cylinder and the outer cylinder are both open ends;

the lower end of the driving rod is provided with a sliding head which is matched with the inner cavity of the central cylinder, and a lower air hole corresponding to the central cylinder is arranged on the sliding head;

the lower end of the central cylinder is provided with an outer sliding head matched with the inner cavity of the outer cylinder, and the lower air hole corresponding to the outer cylinder is arranged on the outer sliding head.

Preferably, the upper ends of the first central hole and the second central hole are respectively provided with a step hole, and the side wall of each step hole is provided with an internal thread; the first locking component and the second locking component comprise a section of reducing part arranged on the driving rod and the central cylinder, and the position of the reducing part is opposite to the step hole and is in threaded fit with the step hole.

Preferably, an inner check ring is arranged on the variable diameter part of the driving rod, and an outer check ring is arranged on the variable diameter part of the central cylinder; when the driving rod is in a locking state, the inner retainer ring can form a seal for an upper air hole at the upper end of the central cylinder; when the central cylinder is in a locking state, the outer baffle ring can form a seal for an upper air hole at the upper end of the outer cylinder.

Preferably, the lower ends of the first central hole and the second central hole are respectively provided with a section of extension guide part.

Preferably, a push-pull handle is arranged at the upper end of the driving rod.

Preferably, a fixed shoulder is arranged on the peripheral surface of the lower end of the outer cylinder, a ring edge is arranged at the top of the fixed shoulder, and a connecting port matched with the outer diameter of the fixed shoulder is arranged on the container; the fixed shoulder of the outer cylinder is inserted into the connecting port, and the annular edge is lapped on the connecting port; a locking cap is sleeved outside the fixed shoulder, is matched with the outer diameter of the connecting port, and is in threaded fit with the connecting port; the annular edge is tightly pressed on the connecting port through the locking cap.

Preferably, an inner limit ring is arranged on the peripheral surface of the driving rod above the inner movable valve.

Preferably, an outer limit ring is arranged on the peripheral surface of the central cylinder above the outer movable valve.

Preferably, it is applied to a tank containing said pressurized suction device.

The beneficial effects of the utility model are concentrated in that: through exquisite structural design, can possess simultaneously and inflate pressurization and pump drainage depressurization's effect, but wide application in the occasion that needs to carry out pressurization and suction. Specifically, in the use process of the utility model, when the central cylinder and the outer cylinder are required to be pressurized, the central cylinder and the outer cylinder are locked, and the air passage corresponding to the outer cylinder is in a closed state; the driving rod is pulled by hand, the inner movable valve is driven to slide in the central cylinder through the driving rod, and due to the funnel-shaped design that the special opening of the inner movable valve faces downwards, when the inner movable valve is pulled upwards, external air can enter the lower part of the inner movable valve, and when the inner movable valve is pushed downwards, the inner movable valve is leaned against the inner wall of the central cylinder to prevent the air in the container from being discharged, so that the entering air can be pushed into the container. When the suction is required to be applied, the driving rod and the central cylinder are locked to form an integral state, and the air channel corresponding to the central cylinder is in a closed state; still pull the actuating lever with the hand, drive the central section of thick bamboo through the actuating lever, and then drive outer movable valve and slide in the urceolus, because the special opening of outer movable valve is up funnel-shaped design, when pushing down, the air in the container can get into outer movable valve top, when pulling up, outer movable valve is taken and is stopped external air entering on leaning on the urceolus inner wall, and then just can take out the inside air of container through the push-and-pull repeatedly to form the negative pressure in the container, can realize the negative pressure suction. The utility model has compact structure and can be widely applied to various occasions needing pumping and pressurizing bidirectional operation.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a preferred embodiment of the present utility model;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is a schematic view of another preferred embodiment of the present utility model;

FIG. 5 is a schematic illustration of the structure shown in FIG. 4 prior to assembly;

FIG. 6 is a schematic view of the structure of the pressurizing suction device;

FIG. 7 is a schematic view of the structure of FIG. 6 in use;

fig. 8 is a schematic view of another use state of the structure shown in fig. 6.

Detailed Description

An outdoor water tank is shown in combination with fig. 1-5, and comprises a tank body 1, wherein the shape of the tank body 1 is generally round, square and the like, and square is preferable, and the tank body has more flat surfaces, so that various placing requirements are met. The preferred material of the box 1 is made of light PC plastic, which has the characteristics of high hardness, light weight and the like. The inside of the box body 1 is provided with the partition board 2, and the partition board 2 and the box body 1 are generally in an integral structure, and can be installed at the rear position. The box 1 divides the interior of the box 1 into a raw water cavity 3 and a water purifying cavity 4 through a partition plate 2, and the raw water cavity 3 is used for containing an original water body when water is taken in the field, and the water purifying cavity 4 is used for storing the filtered clean water body as the name implies.

Regarding the arrangement of the partition plate 2 of the present utility model, as shown in fig. 1, a lateral arrangement may be adopted, in which case the partition plate 2 has a raw water chamber 3 above and a purified water chamber 4 below. The partition plate 2 may be longitudinally arranged, and of course, even diagonally arranged, so long as it can divide the tank 1 into the raw water cavity 3 and the purified water cavity 4, and is convenient for subsequent water filtering treatment. Here, taking the direction shown in fig. 1 as an example, the raw water cavity 3 is arranged above in a transverse arrangement mode, and the water purifying cavity 4 is arranged below, so that the gravity of the water body can be fully exerted during filtration, and the filtration permeation speed is improved.

In order to supplement raw water and facilitate the use of clean water, the box body 1 corresponding to the raw water cavity 3 is provided with a water inlet 5, the box body 1 corresponding to the water purifying cavity 4 is provided with a water outlet 6, and an adaptive switch is usually required at the water outlet 6. In order to be convenient for add towards the raw water cavity 3 in adding water to be convenient for with the water discharge in the clean water chamber 4, the upper portion of raw water cavity 3 and clean water chamber 4 one side all is provided with atmosphere intercommunication mouth 17, atmosphere intercommunication mouth 17 department still is adapted with the flap, can utilize the flap to realize the closure to atmosphere intercommunication mouth 17.

The raw water cavity 3 and the water purifying cavity 4 are communicated through the water passing holes 7 arranged on the partition plate 2, the water passing holes 7 are provided with the purifying filter element 9, the purifying filter element 9 is usually a ceramic filter element, the ceramic filter element has excellent purifying performance on water, and of course, other types of purifying filter elements 9 are also feasible under the condition of meeting the filtering requirement, and the purifying filter element 9 is a cylindrical filter element. The side wall of the box body 1 corresponding to the water passing hole 7 is provided with a filter element mounting opening 8, and the filter element mounting opening 8 is used for mounting a purifying filter element 9. As shown in fig. 1, the utility model can be that the filter element mounting port 8 is arranged on the corresponding tank wall of the upper raw water cavity 3, and the purifying filter element 9 is positioned in the raw water cavity 3. Or the filter element mounting port 8 is positioned on the wall at the bottom of the water purifying cavity 4, and the purifying filter element 9 is positioned in the water purifying cavity 4. When in installation, the purifying filter element 9 penetrates into the box body 1 through the filter element installation opening 8, the inner end of the purifying filter element is opposite to the water passing hole 7, and the outer end of the purifying filter element is in threaded fit with the filter element installation opening 8.

Because the purification filter element 9 of the utility model adopts a semi-external installation mode, the main body of the purification filter element 9 is positioned in the box body 1, and one end of the main body is positioned outside the box body 1, the purification filter element 9 can be conveniently and rapidly replaced, and the convenience of use is further improved. Specifically, in the application process, an original water body is added into the raw water cavity 3 of the box body 1 through the water inlet 5, enters the purification filter element 9 through the water through holes 7, and is purified through the purification filter element 9, and the purified water body after the treatment is stored in the water purification cavity 4 for later use, and is discharged from the water outlet 6 when needed for use.

In order to ensure the stability of the installation of the purification cartridge 9, as shown in fig. 1, the water passing hole 7 extends towards the end where the water purifying cavity 4 is located, that is, downward, and forms a short convex pipe 10, and the inner end of the purification cartridge 9 is sleeved outside the short convex pipe 10. The original water flows to the purifying filter element 9 through the short convex pipe 10, is filtered by the multi-layer filter layers of the purifying filter element 9, is discharged from the periphery of the purifying filter element 9, and enters the water purifying cavity 4.

Regarding the choice of the position of the water inlet 5, the water inlet 5 is generally positioned at the top of the raw water cavity 3, and the water outlet 6 is positioned at one side of the bottom of the water purifying cavity 4. In addition, in order to seal the water inlet 5, a sealing cover 11 can be matched with the water inlet 5, and normally, the sealing cover 11 is in threaded fit with the water inlet 5, so that the water inlet 5 is convenient to disassemble and apply.

Generally at the in-process of water intaking, the user carries box 1 near to the water source, then with scooping up the instrument with the water from water inlet 5 scoop can, but when open-air water use, can meet shallow water district in many cases, the water source water degree of depth only a few centimetres's degree of depth, and direct utilization instrument scoops up this moment often can surge silt etc. in the water, is unfavorable for follow-up purification operation, and the scooping up degree of difficulty is also great simultaneously. In order to solve the above problems, the present utility model is conveniently applied to field water intake, as shown in fig. 2, a water drawing port 12 protruding toward the inside of the raw water cavity 3 is further provided at the lower part of one side of the raw water cavity 3, a flow direction control component that is unidirectionally communicated from the outside of the raw water cavity 3 to the inside is provided in the water drawing port 12, and the flow direction control component is used for preventing water in the raw water cavity 3 from flowing out, and the flow direction control component has a more specific form, for example, may be a one-way valve, or may be a one-way valve 16 as shown in fig. 3. The raw water cavity 3 is also provided with an air pump device 13 which can pump out the air in the raw water cavity 3.

In this form, the user can lay the box 1 horizontally and put the water drain 12 directly into the water body, then suck by the air pump device 13, and then the air in the raw water cavity 3 is discharged and negative pressure is formed. Under the action of external atmospheric pressure, external water can be pressed into the raw water cavity 3 from the water drawing port 12. Further, as shown in fig. 2, the present utility model may also be adapted to a water drawing hose 14, wherein one end of the water drawing hose 14 is provided with a connector 15 matched with the water drawing port 12, and the connector 15 is installed at the water drawing port 12. The air pump device 13 is generally arranged at the water inlet 5 and is in threaded engagement with the water inlet 5.

The air pump device 13 may be a matched electric pump, and the cover 11 can be removed and installed at the water inlet 5 when in use. However, in order to better cope with the special field environment, a manual pump is generally preferred, electric driving is not needed, the stability is good, and the damage is not easy to damage.

Considering that the utility model not only needs to form negative pressure suction on the water body by pumping air from the box body 1, but also can quicken the filtering speed by pressurizing in the raw water cavity 3. The air pump device 13 of the present utility model can be used more conveniently if it can be pressurized. For this purpose, the utility model also discloses a matched pressurizing and sucking device.

As shown in fig. 6 to 8 in detail, the pressurized pumping device of the present utility model includes an outer cylinder 25, a center cylinder 26, and a driving lever 27. The driving rod 27 passes through a first central hole 28 arranged at the top of the central cylinder 26 and forms a vertical sliding fit with the central cylinder 26, and the driving rod 27 and the central cylinder 26 can be locked or unlocked through a first locking assembly. The central cylinder 26 passes through a second central hole 29 arranged at the top of the outer cylinder 25 and forms vertical sliding fit with the outer cylinder 25, and locking or unlocking can be formed between the central cylinder 26 and the outer cylinder 25 through a second locking assembly.

According to the utility model, through the cooperation of the driving rod 27 and the central cylinder 26 and the cooperation of the central cylinder 26 and the outer cylinder 25, two air paths are formed, and through the switching of the two air paths, the suction and the pressurization are respectively realized.

As shown in fig. 6, a funnel-shaped inner movable valve 30 with a downward opening is fixedly arranged on the outer side wall of the driving rod 27, and the inner movable valve 30 is matched with the inner cavity of the central cylinder 26. An outer movable valve 31 in a funnel shape with an upward opening is fixedly arranged on the outer side wall of the central cylinder 26, and the outer movable valve 31 is matched with the inner cavity of the outer cylinder 25. In the process of moving the inner and outer movable valves, the inner or outer pumping operation can be realized due to different orientations.

The upper ends of the central cylinder 26 and the outer cylinder 25 are respectively provided with an upper air hole 32 communicated with the outside, and the lower ends of the central cylinder 26 and the outer cylinder 25 are respectively provided with a lower air hole 33 communicated with the inside of the container. When the driving rod 27 is in a locking state, the corresponding air passage of the central cylinder 26 is closed. When the central cylinder 26 is in a locking state, the air passage corresponding to the outer cylinder 25 is closed. The specific air passage sealing modes are more, for example, a knob, a button and the like are arranged at the upper air hole 32, and after the first locking component or the second locking component is used for locking, the knob is operated to realize the opening and closing of the upper air hole 32. However, this is due to the fact that during operation, on the one hand, the locking movement (drive rod and central cylinder) is operated and, on the other hand, the opening and closing of the upper air opening 32 is operated. There is a relatively complex procedure.

In order to simplify the operation and the overall structure of the present utility model, and to achieve cost reduction and efficiency enhancement, it may be better that the upper ends of the first central hole 28 and the second central hole 29 are respectively provided with a step hole 36, and the side walls of the step holes 36 are provided with internal threads. The first and second locking assemblies include a length of variable diameter portion 37 provided on the drive rod 27 and the center barrel 26, the variable diameter portion 37 being positioned opposite the stepped bore 36 and in threaded engagement with the stepped bore 36. By rotating the central cylinder 26 and the drive rod 27 relative to each other, a screw lock of both can be formed. By relatively rotating the outer cylinder 25 and the center cylinder 26, screw locking of both can be also formed, and the operation is extremely simple.

Meanwhile, by providing the inner retainer ring 38 on the diameter-variable portion 37 of the drive rod 27, the outer retainer ring 39 is provided on the diameter-variable portion 37 of the center tube 26. When the driving rod 27 is in the locking state, the inner retainer ring 38 can form a seal for the upper air hole 32 at the upper end of the central cylinder 26. When the central cylinder 26 is in a locking state, the outer baffle ring 39 can form a seal of the upper air hole 32 at the upper end of the outer cylinder 25. The two states are shown in fig. 7 and 8, respectively.

In the use process, when the central cylinder 26 and the outer cylinder 25 need to be pressurized, as shown in fig. 7, the air passage corresponding to the outer cylinder 25 is in a closed state; when the driving rod 27 is pulled by hand, the inner movable valve 30 is driven to slide in the central cylinder 26 by the driving rod 27, and due to the funnel-shaped design that the special opening of the inner movable valve 30 faces downwards, when the inner movable valve 30 is pulled upwards, external air can enter the lower part of the inner movable valve 30, and when the inner movable valve 30 is pushed downwards, the inner movable valve 30 is abutted against the inner wall of the central cylinder 26 to prevent the air in the container from being discharged, so that the entering air can be pushed into the container. When the suction is required, as shown in fig. 8, the driving rod 27 and the central cylinder 26 are locked to form an integral state, and the air passage corresponding to the central cylinder 26 is in a closed state; still pull actuating lever 27 with the hand, drive central section of thick bamboo 26 through actuating lever 27, and then drive outer movable valve 31 and slide in urceolus 25, because the special opening of outer movable valve 31 is up funnel-shaped design, when pushing down, the air in the container can get into outer movable valve 31 top, when pulling up, outer movable valve 31 is taken and is stopped external air entering on the urceolus 25 inner wall, and then just can take out the inside air of container through the repeated push-and-pull to form the negative pressure in the container, can realize the negative pressure suction. The utility model has compact structure and can be widely applied to various occasions needing pumping and pressurizing bidirectional operation. (the container is a water tank, that is, the pressurizing and sucking device can be applied to an outdoor water tank, and of course, the pressurizing and sucking device can also be widely applied to other related scenes)

In order to improve the stability of the movement of the center tube 26 and the driving rod 27, the lower ends of the center tube 26 and the outer tube 25 are both open ends as shown in fig. 6. The lower end of the driving rod 27 is provided with a sliding head 34 which is matched with the inner cavity of the central cylinder 26, and the lower air hole 33 corresponding to the central cylinder 26 is arranged on the sliding head 34. The lower end of the central cylinder 26 is provided with an outer sliding head 35 matched with the inner cavity of the outer cylinder 25, and the lower air hole 33 corresponding to the outer cylinder 25 is arranged on the outer sliding head 35. Meanwhile, a section of extension guide 40 may be further provided at the lower ends of the first and second central holes 28 and 29 to further improve the movement stability.

In order to facilitate pushing and pulling the driving rod 27, a push-pull handle 41 is provided at the upper end of the driving rod 27. In order to prevent the movable valve from being damaged due to excessive pushing and pulling during driving, an inner limit ring 46 is arranged on the peripheral surface of the driving rod 27 above the inner movable valve 30. An outer limit ring 47 is provided on the peripheral surface of the central cylinder 26 above the outer movable valve 31.

As to the specific connection form of the pressurized pumping device and the container according to the present utility model, as shown in fig. 6, a fixed shoulder 42 is provided on the peripheral surface of the lower end of the outer cylinder 25, a ring edge 43 is provided on the top of the fixed shoulder 42, and a connection port 44 adapted to the outer diameter of the fixed shoulder 42 is provided on the container. The fixed shoulder 42 of the outer tube 25 is inserted into the connection port 44, and the annular rim 43 is abutted against the connection port 44. The fixed shoulder 42 is also sleeved with a locking cap 45, and the locking cap 45 is matched with the outer diameter of the connecting port 44 and forms threaded fit with the connecting port 44. The annular edge 43 is pressed against the connecting opening 44 by means of a locking cap 45.

In addition, in order to meet the portable requirement, especially for the large-sized case 1 with larger volume, the utility model can also adopt a mode that as shown in fig. 4 and 5, the side walls of the raw water cavity 3 and the purified water cavity 4 are bellows-shaped telescopic areas 18, the telescopic areas 18 can be stretched in a direction away from the partition plate 2 or compressed in a direction approaching the partition plate 2, and the telescopic areas 18 can be made of flexible materials such as silica gel films and the like. The raw water cavity 3 and the water purifying cavity 4 are respectively provided with a supporting mechanism for forming a shaping support for the telescopic area 18 when the telescopic area 18 is in a stretching state.

When the box is required to be used, the telescopic area 18 of the box body can be stretched, so that the box body 1 has a larger volume. The supporting mechanism can ensure the stability and rigidity of the box body 1 in the use process and avoid deformation. After the use, the telescopic area 18 of the box body 1 can be compressed, so that the box body 1 is integrally formed into a flattened structure, the storage and the transportation are convenient, and the convenience of the application of the outdoor water tank is greatly enhanced.

The mode of forming the supporting structure is more, and the purification filter element 9 is arranged in the water purification cavity 4, so that the purification filter element can directly pass through the inner core pipe of the purification filter element 9 to serve as a supporting foundation. That is, the corresponding support mechanism of the water purifying chamber 4 is composed of the purifying filter element 9. And the support at the raw water cavity 3 can adopt the following structural form, as shown in fig. 4, the corresponding support mechanism of the raw water cavity 3 comprises a support screw 19, a rod hole 20 for the support screw 19 to pass through is arranged on the tank wall of the raw water cavity 3 opposite to the partition plate 2, and a rod seat 21 is arranged on the partition plate 2 opposite to the rod hole 20. The supporting screw 19 is in threaded fit with the rod hole 20 and the rod seat 21. In use, the support screw 19 is inserted into the rod seat 21 to form a support after passing through the rod hole 20 and rotating to a proper support length. At least two groups of support screws 19, rod holes 20 and rod seats 21 are arranged on one pair, and the two groups of support screws 19, rod holes 20 and rod seats 21 are symmetrically distributed on two sides of the raw water cavity 3.

In order to facilitate the overall arrangement of the box body 1 of the utility model, two U-shaped supporting legs 22 distributed in a splayed shape are further arranged at the bottom of the box body 1, and two ends of each supporting leg 22 are hinged with a hinge seat 23 arranged at the bottom of the box body 1. By rotating the support feet 22, the spreading and storage can be quickly achieved. A limiting block 24 for preventing the supporting leg 22 from overturned excessively is arranged on one side of the hinging seat 23 facing the outside of the box body 1.

Also, in this telescopic structure, the present utility model may also be provided with the water suction port 12, and adapted to the flow direction control member, the air pump device 13, the water suction hose 14, etc., which are the same as those described above.

Claims (10)

1. A pressurized pumping device, characterized by: comprises an outer cylinder (25), a central cylinder (26) and a driving rod (27);

the driving rod (27) passes through a first central hole (28) arranged at the top of the central cylinder (26) and forms vertical sliding fit with the central cylinder (26), and locking or unlocking can be formed between the driving rod (27) and the central cylinder (26) through a first locking component; the central cylinder (26) passes through a second central hole (29) arranged at the top of the outer cylinder (25) and forms vertical sliding fit with the outer cylinder (25), and locking or unlocking can be formed between the central cylinder (26) and the outer cylinder (25) through a second locking assembly;

the outer side wall of the driving rod (27) is fixedly provided with a funnel-shaped inner movable valve (30) with a downward opening, and the inner movable valve (30) is matched with the inner cavity of the central cylinder (26); an outer movable valve (31) with an upward opening in a funnel shape is fixedly arranged on the outer side wall of the central cylinder (26), and the outer movable valve (31) is matched with the inner cavity of the outer cylinder (25);

the upper ends of the central cylinder (26) and the outer cylinder (25) are respectively provided with an upper air hole (32) communicated with the outside, and the lower ends of the central cylinder (26) and the outer cylinder (25) are respectively provided with a lower air hole (33) communicated with the inside of the container; when the driving rod (27) is in a locking state, the air passage corresponding to the central cylinder (26) is closed; when the central cylinder (26) is in a locking state, the air passage corresponding to the outer cylinder (25) is closed.

2. The pressurized pumping device of claim 1, wherein: the lower ends of the central cylinder (26) and the outer cylinder (25) are both open ends;

the lower end of the driving rod (27) is provided with an inner sliding head (34) which is matched with the inner cavity of the central cylinder (26), and a lower air hole (33) corresponding to the central cylinder (26) is arranged on the inner sliding head (34);

the lower end of the central cylinder (26) is provided with an outer sliding head (35) matched with the inner cavity of the outer cylinder (25), and a lower air hole (33) corresponding to the outer cylinder (25) is arranged on the outer sliding head (35).

3. A pressurized pumping device as defined in claim 2, wherein: the upper ends of the first central hole (28) and the second central hole (29) are respectively provided with a step hole (36), and the side wall of the step hole (36) is provided with an internal thread; the first locking assembly and the second locking assembly comprise a section of reducing part (37) arranged on the driving rod (27) and the central cylinder (26), and the reducing part (37) is opposite to the step hole (36) and is in threaded fit with the step hole (36).

4. A pressurized pumping device as defined in claim 3, wherein: an inner check ring (38) is arranged on the variable diameter part (37) of the driving rod (27), and an outer check ring (39) is arranged on the variable diameter part (37) of the central cylinder (26); when the driving rod (27) is in a locking state, the inner check ring (38) can form a seal for an upper air hole (32) at the upper end of the central cylinder (26); when the central cylinder (26) is in a locking state, the outer baffle ring (39) can form a seal of an upper air hole (32) at the upper end of the outer cylinder (25).

5. The pressurized pumping device of claim 4, wherein: the lower ends of the first central hole (28) and the second central hole (29) are respectively provided with a section of extension guide part (40).

6. A pressurized pumping device as defined in claim 5, wherein: the upper end of the driving rod (27) is provided with a push-pull handle (41).

7. The pressurized pumping device as defined in claim 6, wherein: a fixed shoulder (42) is arranged on the peripheral surface of the lower end of the outer cylinder (25), a ring edge (43) is arranged at the top of the fixed shoulder (42), and a connecting port (44) which is matched with the outer diameter of the fixed shoulder (42) is arranged on the container; the fixed shoulder (42) of the outer cylinder (25) is inserted into the connecting port (44), and the annular edge (43) is lapped on the connecting port (44); a locking cap (45) is sleeved outside the fixed shoulder (42), and the locking cap (45) is matched with the outer diameter of the connecting port (44) and is in threaded fit with the connecting port (44); the annular edge (43) is pressed on the connecting port (44) through the locking cap (45).

8. The pressurized pumping device as defined in claim 7, wherein: an inner limit ring (46) is arranged on the peripheral surface of the driving rod (27) above the inner movable valve (30).

9. The pressurized pumping device as defined in claim 8, wherein: an outer limit ring (47) is arranged on the peripheral surface of the central cylinder (26) above the outer movable valve (31).

10. A pressurized pumping device as defined in claim 9, wherein: the outdoor water tank is applied to an outdoor water tank.